> For the complete documentation index, see [llms.txt](https://firstoken.gitbook.io/api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://firstoken.gitbook.io/api-docs/api-reference/payments/endpoints.md).

# Endpoints

The various services used to process payments are at the heart of payment processing. These services enable customers to purchase goods and services, merchants to receive payments from the customer's accounts, merchants to provide refunds, and merchants to void transactions.